baber/WOPTO huggingface dataset:
Patent GB-415405-A (GB)
Title: Process and material for dry disinfection of the atmosphere
IPC: A61L9/01
Filed: 1933-02-22
Abstract: 415,405. Disinfecting. PARKIN, W. H., 51, Bristol Road, Edgbaston, Birming- ham. Feb. 22, 1933, No. 5381. Drawings to Specification. [Class 81 (i).] A solid disinfectant comprises a salt of a chlorine oxyacid, paraformaldehyde, and a substance which decomposes said salt to give chlorine and oxygen, the latter reaoting to produce formaldehyde. Volatile antiseptics such as thymol or benzoic acid, and essential oils such as oleum abietis or clove oil or oil of lavender may be added which give chlorocompounds with the chlorine present. Perfumes may also be incorporated. A mixture of calcium chloro-hypochlorite, paraformaldehyde, boric acid, volatile essential oils, thymol, and an absorbent base in stated proportions is given as an example. Potassium chlorate may be used, when hydrochloric acid is the preferred decomposing agent. Suitable absorbent bases are wood dust, magnesium carbonate, chalk or kaolin. Air may be withdrawn from the atmosphere by means of a fan, vacuum cleaner or like apparatus, passed over the disinfectant and returned. The disinfectant may be placed in a pervious bag in the path of the air flow or sucked into the dust bag of a vacuum cleaner. It may be held between two gauze discs the edges of which are clinched in a ring of channel section. Such a container may be hooked on to the wire guard of a fan or mounted in the exhaust aperture of a vacuum cleaner.
Patent GB-216566-A (GB)
Title: An improved appliance for playing a game of skill
IPC: A63F7/00
Filed: 1923-02-26
Abstract: 216,566. Samuels, J., and Worrall, W. H. Feb. 26, 1923. No Patent granted (Sealing fee not paid). Table games.-A game apparatus comprises a movable member provided with apertures passing the ends of shoots down which balls are rolled by the players to pass through the apertures. Means, operated by the ball, are provided for indicating the successful passing of a ball through an aperture and for simultaneously stopping the moving member. The apertures 5 are formed in a rotating polygonal member mounted on a platform 3 on a vertical shaft 2 to which is fixed a disc 15 fitted with compartments 16 having translucent windows 17 illuminated by lamps the switches of which are closed when a ball, rolled down to radially-arranged shoots 33, passes through an aperture. The means for effecting this comprise gutters 20 having pivoted, weighted extensions 21 which are depressed by the weight of the ball and operate contacts 25, 26 to light the lamp in the appropriate compartment 16, and to open the circuit of the motor 18 during the apparatus. The ball is released from the gutter 21 by tilting a stop member 23 by the appropriate handle 32 connected thereto by linkage, 30, 31; the gutter then tips back and the motor 18 is restarted. The motor drives a sleeve 6 which drives the platform 3 through discs 8. 14 attached thereto and engaging rollers 13 mounted on a spider which may be fixed to the shaft 2. The sleeve 6 carries an arm 9 which draws a model train round a track on the base 1 of the apparatus in a direction contrary to that of the platform 3. The gutters may be replaced by pivoted weighted levers, the opposite ends of which respectively make and break the electric contacts, and are fitted with baskets &c. for the balls.
Patent GB-373268-A (GB)
Title: Improvements in or relating to loud speakers
IPC: H04R1/22
Filed: 1931-02-21
Abstract: 373,268. Loud-speakers. E L E CTRICAL RESEARCH PRODUCTS, Inc., 195, Broadway, New York, U.S.A.-(Assignees of Flanders, P. B. ; 28, Prospect Street, East Orange, New Jersey, and Harrison, H. C. ; 94, Bayview Avenue, Port Washington, New York, both in U.S.A.) Feb. 21, 1931, No. 5528. Convention date, March 6, 1930. [Class 40 (iv).] A loud-speaker comprises a diaphragm 2, Fig. 1, mounted at one end of an enclosure 3, closed at its other end by an acoustic resistance element 5, e.g. as described in Specification 310,493, [Class 40 (iv), Telephones &c.], provided with narrow slots 6, Fig. 2, of such size that the flow of air is controlled by its viscosity. The enclosure 3 is so proportioned that the elasticity of the enclosed air causes the sound waves passing through the element 5 to be shifted in phase to reduce interference with sound waves from the front of the diaphragm. Preferably, the total acoustic resistance of the element 5 is equal to the elastic reactance of the enclosed air at a frequency of 60 cycles. Formulae connecting the acoustic resistance and elastic reactance are derived, and the acoustic resistance is measured as in Specification 344,506.
Patent GB-539312-A (GB)
Title: Improvements in means for preventing or removing ice formation on or from aircraft propeller blades
IPC: B64D15/16
Filed: 1940-03-28
Abstract: 539,312. De-icing propellers. GOODRICH CO., B. F. March 28, 1940, No. 5641. Convention date, March 28, 1939. [Class 114] De-icing liquid is distributed over the propeller blade through passageways arranged either in a cover secured to the leading edge or cut in the material of the blade. The passageways may take the form of grooves 24-27, which may be of varying length and may be flared outwardly, or of ducts in the cover terminating in apertures in the surface of the latter. The passages &c. are supplied from a manifold on the propeller root which is supplied with liquid through a flexible duct in connection with the usual slinger ring 42 mounted on the propeller hub. The arrangement permits the pitch of the propeller to be adjusted.
Patent GB-349077-A (GB)
IPC: B60T15/30
Filed: 1930-02-20
Abstract: 349,077. Fluid-pressure brakes. WESTINGHOUSE BRAKE & SAXBY SIGNAL CO., Ltd., 82, York Road, King's Cross, London.-(Assignees of Whitaker, U. A.; 1011, Fulton Road, Canton, Ohio, U.S.A.) Feb. 20, 1930, No. 5670. Convention date, March 12, 1929. [Class 103 (i).] In brake apparatus wherein the train-pipe is vented to a chamber in making an application of the brakes, this chamber is exhausted to an extent dependent upon the pressure retained in the brake cylinder when the brakes are only partially released by the provision of a pressure retaining valve so that the effective capacity of the chamber and thus a further application of the brakes is reduced. A triple valve of the retarded release type is shown comprising a spring stop 16 for preventing the movement of the valve from the full release position shown. In this position, air feeds from the trainpipe 2 to the auxiliary reservoir 3 through passage 8, piston chamber 7 passages 23, 25, valve chamber 12 and passage 13. The brake cylinder 4 exhausts through passage 26 valve cavity and a pressure retaining valve 6 provided with a cock 21 whereby the cylinder may as shown be directly connected to the atmosphere by the port 29 or through a spring loaded valve 17 and restricted port 20. In the release position of the valve also, the trainpipe venting chamber 5 is connected by passage 30 and valve cavity 31 to the brake cylinder passage 26 and thus to the exhaust passage 28. When the train-pipe pressure is reduced to effect a service application of the brakes, the valve port 32 is uncovered by the graduating valve and registers with the passage 26 to supply the brake cylinders from the valve chamber 12. At the same time the train-pipe is connected to the chamber 5 by the passages 8, 34, valve cavity 31 and passage 30. If the train pipe is subsequently raised to return the valve to release position both the brake cylinder and the chamber 5 are connected to the exhaust passage 28 and if the pressure retaining valve 17 is operative the chamber 5 only partially exhausts and to the same degree as the brake cylinder. If then a subsequent application of the brakes is made the effective capacity of the chamber 5 and the venting of the train-pipe effected by it is diminished.
Patent GB-594561-A (GB)
Title: Method of making vacuum-tight joints between ceramic elements and other metallic or ceramic elements
IPC: C04B37/00
Filed: 1945-03-07
Abstract: A solder for making vacuum-tight joints between ceramic elements and other ceramic or metal elements comprises either the eutectic silver-copper alloy of 72 per cent silver and 28 per cent copper or a copper-silver alloy containing 85 to 90 per cent of silver.
Patent GB-1189652-A (GB)
Title: Improvements relating to Testing and Locating Leaks in Pipes.
Inventor: RIDDLE GEOFREY GEORGE
IPC: G01M3/22
Filed: 1966-02-09
Abstract: 1,189,652. Testing pipes for leaks. G.G. RIDDLE. May 8, 1967 [Feb. 9, 1966], No.5741/66. Heading G1S. Apparatus for testing a pipe network for leaks comprises a fan 1 which blows air through a pipe 3 to a container 4 enclosing smoke producing capsules, the air and smoke then passing through a pipe 5, on/off cock 6 into the pipe system to be tested. A valve 10 regulates the fan output and a diaphragm valve controls the input to the pipe network. In operation, the apparatus is connected to the pipe work under test, and the presence of leaks detected by opening the diaphragm valve to admit the air under pressure into the pipeline, such that if the air pressure remains constant for a predetermined length of time, the pipe is considered to be leak free, if it is found to be leaking then the diaphragm valve is partially closed so that the air pressure balances the leakage, and the operator detects the leaks visually. The smoke may be replaced by means having a pungent smell or coloured trace.
Patent GB-934615-A (GB)
Title: Feedback control system having a velocity error compensating device
IPC: B23Q5/36
Filed: 1962-02-15
Abstract: 934,615. Milling. CINCINNATI MILLING MACHINE CO. Feb. 15, 1962 [March 2, 1961], No. 5798/62. Class 83 (3). A machine tool comprises a primary servovalve which responds to a velocity input signal to control an hydraulic means for actuating a compensating hydraulic actuator for moving a secondary servovalve controlling a main hydraulic means for moving a load member, and a feedback connection from the main means to the primary valve to move the valve to a neutral position. Handwheels 12, 16 adjust the table 11 and a slide 15. The slide 15 carries a cutter slide 17 movable vertically by intergeared handles 18, 19. The slide carries a cylinder 25 co-operating with a piston 26 on a rod having ports 30 connected through passages in the rod to lines 36, 37 from the secondary valve 35. Mounted on the rod is a piston 40 in a compensating cylinder 39 connected to the primary valve 45. The table 11 also carries a screw 57 engaged by spring-pressed half-nuts in a slidable and rotatable member 54 connected to a plunger 49 engaging the valve 45. The member 54 is rotated through a gear 60 either by the hand wheel 12 or by an electric motor according to the setting of two clutches. The motor is driven by signals from a tape with a feedback control provided by a rack on the table. Thus, in operation, when the gear 60 is rotated to move the plunger 49 to the left, pressure is supplied to the left of the piston 40 moving the rod 27 to the right together with the table and the screw 57. The plunger 49 is thereby moved right to return the valve to its null position. However, as the piston 40 moves right it moves the valve 35 to the right thus supplying fluid to the right-hand side of the cylinder 25 to move the table to the right, which will cause the plunger 49 to shift the valve 45 towards the right and fluid will be directed to the right-hand side of the piston 40 to move the table 11 towards the left. After a two-fold cancelling motion, therefore, the table has moved right by a distance equal to the input signal to the plunger 49. For controlling the slide 17, the hand wheel 18 rotates a screw 89, Fig. 4, to displace a primary valve 92; this causes movement of a piston 96 to move the slide 17 and a nut 90 attached thereto, thereby returning the valve 92. At the same time the valve 85 is displaced to supply fluid to the piston 99. Thus, while the handle 18 is turned at a constant speed, the piston 99 is moved. Specifications 705,464 and 753,620 are referred to.
Patent GB-494757-A (GB)
Title: Improvements in electron discharge amplifiers
IPC: H04B3/14
Filed: 1937-02-26
Abstract: 494,757. Valve amplifying circuits. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 26, 1937, No. 5861. Convention date, Feb. 26, 1936. [Classes 40 (iii) and 40 (v)] An amplifier for systems handling a range of frequencies, e.g. television systems, is designed to compensate for the varying attenuation and transit time of the rest of the system by inserting one or more two-terminal networks as coupling or reaction impedances in the amplifier. The curves shown in Fig. 5 show the attenuation b and the transit time t, both plotted against frequency w, for a line or cable. This distortion can be approximately compensated by inserting an inductance L and resistance R in the anode circuit of a screen-grid amplifier V, Fig. 6. The valve amplification increases with frequency thus compensating the attenuation curve b, and the transit time is shown in the Specification also to rise with frequency, giving compensation for the curve t of Fig. 5. The network LCR, shown in Fig. 7, is also treated in some detail in the Specification, the curve s of Fig. 9a representing the valve amplification, the curve a of Fig. 9a the phase angle distortion, and the curve t of Fig. 9b the transit time, all as functions of the frequency w. The curves s, t show steep rises up to the resonant frequency of L and C which frequency is shown by the dotted line. The resonance frequency is therefore normally chosen at the upper limit of the signal frequency band. The capacity C may be the inherent circuit capacity. The Fig. 7 network may be modified by omitting L or by placing R in series with the tuned circuit LC. It may comprise resistance and capacity in series, or inductance and resistance in parallel, Figs. 10-13 (not shown). Reference has been directed by the Comptroller to Specifications 323,823, [Class 40 (v)], and 465,108.
Patent GB-1027394-A (GB)
Title: Improvements in or relating to beneficiation of beryllium ores
Inventor: MOIR DOUGLAS NEWLANDS
IPC: B03D1/001
Filed: 1962-02-15
Abstract: 1,027,394. Beneficiation of beryllium ores. UNITED KINGDOM ATOMIC ENERGY AUTHORITY and COUNCIL FOR SCIENTIFIC & INDUSTRIAL RESEARCH. Feb.12, 1963 [Feb. 15,1962], No. 5945/62. Heading B2H. Beryl concentrate is upgraded by conditioning the pulp with a phosphate solution and re-floating under acid conditions. As shown in the flow diagram aqueous pulp concentrate, assaying 2% beryllium oxide from a previous beneficiation process, is conditioned in a tank 1 with a phosphate solution such as sodium hexameta-phosphate, phosphoric acid or ammonium phosphate. Water is added to give a density of 30% solids. In such condition a cyclone washer is employed to remove slimes smaller than 24 microns from the pulp and a second such wash is considered advisable. The pulp is then frothed in a chamber 5 with the addition of sulphuric acid to give a pH of 4. 5. The railings from chamber 5 are given added water and sulphuric acid and proceed with a pH of 2. 5 to a tank 8 where petroleum sulphonate collector is added at a rate of 2. 5 1bs/ton with a frother such as methyl isobutyl carbinol. A second concentrate is now extracted from a flotation chamber 9 and, together with the concentrate from the earlier flotation chamber 5, passes to a thickener 10. By way of tank 14 the thickened pulp is drained on a drum filter 15 the scrapings from which are dried in a rotary drum 17.
Patent GB-666489-A (GB)
Title: Improvements in or relating to thermionic valve amplifiers
IPC: H03H7/01
Filed: 1948-02-27
Abstract: 666,489. Valve amplifying circuits. DEPARTMENT OF COMMERCE, DIRECTOR OF THE OFFICE OF TECHNICAL SERVICES OF. Feb. 27, 1948 [Aug. 30, 1945], No. 5959/48. Drawings to Specification. Class 40 (vi). A valve amplifier, particularly for intermediate frequencies, with bandwidth #f and centre frequency f o  comprises n stages, each tuned by a single resonant circuit and associated in pairs. The stages of a pair have a bandwidth equal to and are tuned above and below the centre frequency f o  by where k is an odd integer associated with the pair. When the ratio #f/f o =# (bandwidth/ centre frequency) is not negligibly small, the stages of each pair are tuned to frequencies f o α k  and fo/α k  and each has a Q-value equal to 1 -, where d k  and k is an odd integer between 1 and n-1 associated with the pair. If the number of stages should be odd, one stage'is tuned to the centre frequency f o  and has bandwidth #f. The Specification includes tables of desired bandwidth and staggering for different numbers of stages.
Patent GB-470980-A (GB)
Title: Improvement in rim and mortise lock furniture and the like
IPC: E05B3/04
Filed: 1936-02-28
Abstract: 470,980. Attaching knobs to latch &c. spindles. WILLIAMS, E. Feb. 28, 1936, No..5968. [Class 44] In means for attaching knobs to latch spindles in which a screw A passes axially through the knob B and engages a tapped axial hole in the usual non-circular latch spindle D, the screw has a T-head A<1> serving as a foundation on which a hand-operable head A<2> is moulded or otherwise fixed. The head may have a plain or fluted periphery, a flat inner face bearing against a flat formed on the knob, and may be of any shape or material preferably harmonizing with the shape and material of the knob. An antifriction washer E may be placed between the inner end of the knob and the bottom of the bearing recess in the usual rose-plate C.
Patent GB-439233-A (GB)
Title: Improvements in and relating to dynamo electric machines
IPC: H02K23/10
Filed: 1934-02-24
Abstract: 439,233. Dynamos. BRITISH THOMSONHOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Allgemeine Elektricitõts - Ges. ; 2, Friedrich Karl - Ufer, Berlin) Feb. 24, 1934, No. 6103. Void [Abridged as open to inspection under Sect. 91 of the Acts, Aug. 27, 1934]. [Class 35] Exciting.-To obtain a constant power output independent of current changes in a Diesel or like driven generator a local flux circuit is provided in the main pole controlled by a differential series winding b, and arranged so that the portion of this circuit which is opposing the main flux becomes saturated at a determined current loading. As shown the local circuit is formed with a central part a of the main pole and the two side portions, the width of the central part equalling that of the two side parts. A shunt or separately excited winding may be used to assist the differential series winding and a series winding may assist the main shunt winding d.
Patent GB-382511-A (GB)
Title: Travelling rotary furnace
IPC: F23C99/00
Filed: 1932-02-29
Abstract: 382,511. Rotary furnaces. SCHMIDT GES., K., 10, Fabrikstrasse, Neckarsulm, W³rtemberg, Germany. Feb. 29, 1932, No. 6110. Convention date, March 3, 1931. [Class 51 (ii).] The burner h and the flue n of a small rotary melting furnace a are mounted on a common carriage, so that they can be moved away from the furnace together. The fuel receptacle l and blower k are also mounted on the carriage, and the whole apparatus is carried by the truck q.
Patent GB-661272-A (GB)
Title: Process for the manufacture of the procaine salt of penicillin
IPC: C07D499/00
Filed: 1948-02-27
Abstract: The procaine salt of penicillin is manufactured by reacting procaine or a salt thereof with penicillin or a salt thereof in a common solvent and separating the procaine penicillin in solid form. Preferably a soluble metal salt of penicillin is reacted in aqueous solution with a soluble procaine salt of an acid which will form a soluble salt with the metal of the metal penicillin salt, in which case the procaine penicillin may be separated by fractional crystallization or fractional precipitation with organic solvents. In examples: (1) calcium penicillin is added to an aqueous solution of procaine ascorbate to form a solution of procaine penicillin and calcium ascorbate, from which the former is isolated by fractional crystallization; (2) penicillin and procaine are dissolved in chloroform and the solution is evaporated to dryness in vacuo to obtain solid procaine penicillin.  The Specification as open to inspection under Sect. 91 comprises also: (a) the use of other amino and amido compounds, e.g. those defined in Specifications 661,357, 661,358 and 661,359, and also alkylolamines, protein hydrolysates free from sulphur compounds, individual amino acids and alkaloids (examples of all of which are specified), p-aminobenzoic acid, creatinine (preferably in the form of its adenylate) and hexamethylenetetramine; (b) the use as starting materials of esters and "acetyl, propionyl, benzoyl and other acyl derivatives" of penicillin, and other antibiotics (e.g. tyrothricin and streptomycin) and their salts, esters and acyl derivatives; (c) the use of the amine in other than stoichiometric proportions, e.g. in excess or especially in an amount sufficient to combine with only a small proportion of the antibiotic, the salt formed therewith having a stabilizing effect on the free antibiotic.  Additional examples include those of the above-mentioned Specifications, and descriptions of the preparation of monoethanolamine penicillin, ox-blood hydrolysate penicillin, lysine-arginine-histidine penicillin, penicillin urethane, penicillin hexamethylenetetramine, penicillin histidine and tyrothricin urea.  This subject-matter does not appear in the Specification as accepted.
Patent GB-469141-A (GB)
Title: Improvements relating to bobbins used for dyeing or otherwise treating with liquids yarns, threads or fibres
IPC: D06B23/04
Filed: 1936-02-29
Abstract: 469,141. Bobbins. MORTON, J., and JONES, J. I. M. Feb. 29, 1936, No. 6166. [Class 120 (iii)] A bobbin for use in treating yarns with liquids has the inner faces of its flanges b, c bevelled to a conical formation and one or both flanges are screwed or otherwise secured to the central tubular perforated barrel a so that endwise pressure may be applied to the yarn package to compress it. As shown, the flanges are of flat truncated conical form and the removable flange or flanges may be formed with a plain aperture below the screwed part so that when the flange or flanges are screwed on to the barrel the plain parts slide over it.
Patent GB-216929-A (GB)
Title: Improvements in or relating to apparatus for treating fibrous materials with liquidsor gases
IPC: D06B5/00
Filed: 1923-03-03
Abstract: 216,929. Pattison, E. W., (Tomlinson, J., and Thomas, G.). March 3, 1923. Circulating or passing fluids through materials. -Apparatus for the washing, scouring, bleaching, dyeing, steaming, &c. of cloth either in open width or in twisted or rope form, or yarn, comprises two or more kiers 4, 4a each containing a wagon 9, 9a for the goods to be treated, and a circulating pump 16 or the equivalent, the kiers being connected together and to the pump, as by pipes 23, 14, 15, 18, 19, 29 and suitable control valves, in such a manner that liquid may be circulated at will through the kiers in series or in parallel and in either direction. The wagons run on rails 6, and are provided with longitudinal partitions 11 perforated for the passage of liquid and constituting a longitudinal chamber 12 which is connected by means of a pipe 13 with the pipe 14 leading to the pump. When steaming the cloth &c. only one kier will be filled with liquid which will be transferred from this kier to the other, and vice versa, so that the cloth is treated with liquid and steam alternately.
Patent GB-525656-A (GB)
Title: Improvements in or relating to the concentration of dispersions or rubber or rubber-like substances
IPC: C08C1/08
Filed: 1939-02-24
Abstract: 525,656. Concentrating rubber dispersions. BONDY, C. Feb. 24, 1939, No. 6224. [Class 70] In preparing concentrated aqueous dispersions of rubber, guttapercha, balata or polymerized butadiene or chlorbutadiene the aqueous dispersion is mixed with a creaming agent such as alkali alginates, pectin, gum, mosses &c. and allowed to stand for creaming. The cream is removed, agitated by stirring, shaking, or subjection to ultrasonic vibrations ; and allowed to stand for separation of a more concentrated cream. The agitation and recreaming may be repeated.